Thanks! interesting alternative.
I currently often use MeanWell 15W PSU's like the SNT RS 15 5 for small projects like the one in the picture for instance.
But if you don't have the room for it or want to make it smaller, this could be a great alternative
I use those MeanWells too. The main problem is their size when you're making trying to make small stuff.
I find myself putting USB C connectors on most stuff I build these days, it's just a really easy way to power things.
I haven't really looked at ripple, etc., on those Ikea chargers but they're ideal for "Arduino" projects where ripple doesn't really matter.
Sorry for the offtopic, back to Fluke batteries
I think that's been fully answered - "never alkalines".